4418382978 has 64 divisors (see below), whose sum is σ = 9999014400. Its totient is φ = 1464030288.

The previous prime is 4418382931. The next prime is 4418383031. The reversal of 4418382978 is 8792838144.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753783 + ... + 759621.

It is an arithmetic number, because the mean of its divisors is an integer number (156234600).

Almost surely, 2^4418382978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4418382978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4999507200).

4418382978 is an abundant number, since it is smaller than the sum of its proper divisors (5580631422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4418382978 is an equidigital number, since it uses as much as digits as its factorization.

4418382978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035 (or 6017 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 4418382978 is about 66470.9182876241. The cubic root of 4418382978 is about 1640.9214257402.

The spelling of 4418382978 in words is "four billion, four hundred eighteen million, three hundred eighty-two thousand, nine hundred seventy-eight".